It looks like our farewell to the Pretty Little Liars world was short-lived!

On Monday, Freeform revealed that the beloved teen drama would be getting a spin-off, featuring former Rosewood IT-girls Alison DiLaurentis (played by Sasha Pieterse) and Mona Vanderwaal (played by Janel Parrish). In the trailer (above), Miz DiLaurentis joins the faculty at a college in the fictiona...